US1570583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plaster of paris and method of making the same
Assignee: RUMFORD CHEMICAL WORKS
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Filing: 1924-08-22
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Granted: 1926-01-19
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Expires: 1944-08-22
Abstract
No abstract record available.
Inventors
- 👤 Wilson Ellery Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
C; C04; C04B; C04B11/00; C04B11/26; C04B11/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-01-18 | 1929-07-20 | 1930-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-01-18 | 1933-07-20 | 1934-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-01-18 | 1937-07-20 | 1938-01-19 | $7700.00 | Window Closed / Lapsed |